I rejoiced greatly that I found of thy children walking in truth, as we have received a commandment from the Father.

And now I beseech thee, lady, not as though I wrote a new commandment unto thee, but that which we had from the beginning, that we love one another.

And this is love, that we walk after his commandments. This is the commandment, That, as ye have heard from the beginning, ye should walk in it. (2 John 1:4-6 kjv)

The Second Epistle of JOHN The Apostle John is unmistakably the author of this book (see introduction to I John). It probably written about the same time as the Book of 1 John (AD. 85 -90) and may have addressed to some of the same people.   The "elect lady and her children" (2 John 1:1) be a reference to an actual lady and her children, but many scholars contend that this is a cryptic way of addressing a church to safeguard against the letter falling into the hands of those who were hostile to the Church. The purpose of the book was to warn against false teachers who commonly traveled church to church spreading heresy. John instructed that these people should not even receive ordinary hospitality from those in the church (2 John 1:10, 11).   Another objective of Book of 2 John was to inform the recipients of his plans to visit them soon. This is also as the reason for the brevity of the letter (2 John 1:12).  [Source for Introduction of chapter: Hebrew Greek Key Study Bible KJV edited by Spiros Zodhiates, Th.D. AMG Publishers, Chattanooga, TN 37422]